US7487990B2 - Semitrailer coupling - Google Patents

Semitrailer coupling Download PDF

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Publication number
US7487990B2
US7487990B2 US10/538,541 US53854103A US7487990B2 US 7487990 B2 US7487990 B2 US 7487990B2 US 53854103 A US53854103 A US 53854103A US 7487990 B2 US7487990 B2 US 7487990B2
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Prior art keywords
bearing block
bearing
coupling plate
region
fastening
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Expired - Fee Related, expires
Application number
US10/538,541
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US20060170190A1 (en
Inventor
Christian Roth-Schuler
Dirk Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAF Holland GmbH
Original Assignee
Georg Fischer Verkehrstechnik GmbH
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Application filed by Georg Fischer Verkehrstechnik GmbH filed Critical Georg Fischer Verkehrstechnik GmbH
Assigned to GEORG FISCHER VERKEHRSTECHNIK GMBH reassignment GEORG FISCHER VERKEHRSTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROTH-SCHULER, CHRISTIAN, SCHNEIDER, DIRK
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Publication of US7487990B2 publication Critical patent/US7487990B2/en
Assigned to SAF-HOLLAND VERKEHRSTECHNIK GMBH reassignment SAF-HOLLAND VERKEHRSTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GEORG FISCHER VERKEHRSTECHNIK GMBH
Assigned to SAF-HOLLAND GMBH reassignment SAF-HOLLAND GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAF-HOLLAND VERKEHRSTECHNIK GMBH
Adjusted expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
    • B62D53/08—Fifth wheel traction couplings
    • B62D53/0807—Fifth wheel traction couplings adjustable coupling saddles mounted on sub-frames; Mounting plates therefor

Definitions

  • the invention relates to a semitrailer coupling comprising a coupling plate and a bearing block for movable fastening of the coupling plate to a frame of a tractor, the bearing block having a bearing region and a fastening region, the bearing region being designed for pivotable bearing of the coupling plate and the fastening region being designed for detachable fastening of the coupling plate to the frame of the tractor.
  • a tractor has a coupling plate, into which a pin, what is known as the king pin, of the trailer is engaged.
  • the trailer lies relatively freely movably on a semitrailer coupling plate of the tractor.
  • the semitrailer coupling plate is connected to the frame of the tractor via two bearing blocks.
  • the bearing blocks comprise bearing elements, which are arranged transversely to the direction of travel of the tractor and make possible pivoting of the coupling plate about a pivoting axis transversely to the direction of travel.
  • a semitrailer coupling of the generic type is known from WO 01/34454 A1.
  • the bearing blocks which are in each case fastened on the left and right side of the vehicle frame, are interconnected parallel to the pivoting axis via a cross-strut.
  • the cross-strut can also be designed on the inner side of the vehicle as a projection on the bearing block concerned.
  • the bearing blocks, the projections and/or the cross-struts rest on the horizontal surface of the frame construction of the tractor.
  • a semitrailer coupling comprising a coupling plate and a bearing block for movable fastening of the coupling plate to a frame of a tractor, the bearing block having a bearing region and a fastening region, the bearing region being designed for pivotable bearing of the coupling plate and the fastening region being designed for detachable fastening of the coupling plate to the frame of the tractor, and, sectioned in the direction of travel and parallel to the pivoting axis, the bearing region having a larger cross section than the fastening region.
  • the semitrailer coupling can be constructed from as few individual parts as possible. This is achieved by virtue of the fact that the bearing blocks are formed from a one-piece casting.
  • transverse forces which act on the semitrailer coupling can be compensated in the bearing blocks. This is achieved by virtue of the fact that the bearing region of the bearing blocks is designed in such a way on the inner side of the vehicle that a clearance for movements of the coupling plate in a direction transverse to the direction of travel is present between the bearing region and the semitrailer coupling plate.
  • FIG. 1 shows a three-dimensional view of a semitrailer coupling according to the invention
  • FIG. 2 shows a view of the semitrailer coupling from FIG. 1 in the direction of travel
  • FIG. 3 shows a section through a bearing block perpendicular to the direction of travel.
  • a semitrailer coupling 1 is illustrated in three-dimensional form in FIG. 1 .
  • the semitrailer coupling 1 is arranged on a tractor (not illustrated here) and serves for movable connection of the tractor to a trailer (likewise not illustrated here) of a semitrailer truck combination.
  • a king pin which is arranged on the front lower side of the trailer, is located in a coupling claw 2 of the semitrailer coupling 1 .
  • the semitrailer coupling 1 comprises essentially a coupling plate 4 and two bearing blocks 5 , only one bearing block 5 of which is illustrated here on the left side in the direction of travel x of the tractor.
  • the bearing block 5 has two regions with different functions: a bearing region 6 and a fastening region 7 .
  • Bearing elements which serve for pivotable mounting of the coupling plate 4 about a pivoting axis y, are located in the bearing region 6 .
  • the pivoting axis y extends transversely to the direction of travel x of the tractor.
  • Screws 8 with which the bearing block 5 is fastened to the frame 3 of the tractor, can be seen in the fastening region 7 .
  • the bearing block 5 is advantageously fastened to the vertical side surface 9 of the vehicle frame 3 by means of screws 8 . Lateral screw fastening makes it possible for mounting and demounting to be carried out extremely easily on existing vehicle frames as well.
  • FIG. 2 the semitrailer coupling 1 from FIG. 1 is again illustrated, seen in the direction of travel x of the tractor. It can be seen clearly here how the fastening region 7 of the bearing block 5 is fastened to the vertical side surface of the vehicle frame 3 with screws 8 . No fastening or support is necessary on the horizontal surface of the vehicle frame 3 , which is a surface with extremely poor access in the assembled state of the tractor.
  • the second bearing block 5 on the right side of the coupling plate 4 has been omitted in FIG. 2 for greater clarity.
  • the references in FIG. 2 refer to the same features as described in FIG. 1 .
  • the bearing block 5 is illustrated on its own in a section perpendicular to the direction of travel x.
  • a receiving region 10 which is provided on the underside of the coupling plate 4 for receiving the bearing block 5 , is indicated diagrammatically with broken lines in the bearing region 6 .
  • the horizontal side surface 9 of the vehicle frame 3 for fastening the bearing block 5 is indicated with further broken lines in the fastening region 7 .
  • the bearing block 5 has a width b in the bearing region 6 which is at least 2.5 times the width of the bearing block 5 in the fastening region 7 .
  • the bearing block 5 is manufactured as a one-piece casting.
  • the shape is calculated in such a way that the necessary rigidity is achieved with minimum weight of the casting.
  • the bearing region 6 is machined in such a way after casting that a clearance S remains free in the assembled state between the bearing region 6 of the bearing block 5 and the receiving region 10 of the semitrailer coupling plate 4 .
  • This clearance S left free on one side on the inner side of the vehicle serves for compensating movements of the coupling plate 4 in the direction of the pivoting axis y.
  • Such a clearance S is likewise provided on the inner side of the vehicle in the case of the opposite bearing block (not shown here).
  • the bearing blocks 5 can be adapted to existing semitrailer couplings and existing vehicle frames.
  • the present semitrailer coupling 1 with the newly dimensioned bearing blocks 5 makes possible, with the same load-carrying capacity, a reduction in weight and consequently a fuel saving for the semitrailer truck combination.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Body Structure For Vehicles (AREA)
  • Seats For Vehicles (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Braking Arrangements (AREA)
  • Agricultural Machines (AREA)
  • Handcart (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

A semitrailer coupling comprising a coupling plate and a bearing block used for movably fastening the coupling plate to a frame of a tractor. The bearing block is provided with a bearing area and a fastening area. The bearing area is embodied such that the coupling plate can be pivotably mounted while the fastening area is configured such that the coupling plate can be detachably fixed to a frame of the tractor. The bearing area has a larger cross section than the fastening area, the cross section extending in the direction of travel (x) and parallel to the pivoting axis (y).

Description

BACKGROUND OF THE INVENTION
The invention relates to a semitrailer coupling comprising a coupling plate and a bearing block for movable fastening of the coupling plate to a frame of a tractor, the bearing block having a bearing region and a fastening region, the bearing region being designed for pivotable bearing of the coupling plate and the fastening region being designed for detachable fastening of the coupling plate to the frame of the tractor.
In motor vehicle traffic, increasing use is made of semitrailer trucks with semitrailer couplings. A tractor has a coupling plate, into which a pin, what is known as the king pin, of the trailer is engaged. In this connection, the trailer lies relatively freely movably on a semitrailer coupling plate of the tractor. The semitrailer coupling plate is connected to the frame of the tractor via two bearing blocks. The bearing blocks comprise bearing elements, which are arranged transversely to the direction of travel of the tractor and make possible pivoting of the coupling plate about a pivoting axis transversely to the direction of travel.
A semitrailer coupling of the generic type is known from WO 01/34454 A1. The bearing blocks, which are in each case fastened on the left and right side of the vehicle frame, are interconnected parallel to the pivoting axis via a cross-strut. The cross-strut can also be designed on the inner side of the vehicle as a projection on the bearing block concerned. The bearing blocks, the projections and/or the cross-struts rest on the horizontal surface of the frame construction of the tractor.
It is an object of the invention to provide a semitrailer coupling which is constructed from as few individual parts as possible, the weight of which is as low as possible and which is compatible with existing semitrailer coupling plates.
SUMMARY OF THE INVENTION
The object is achieved by a semitrailer coupling comprising a coupling plate and a bearing block for movable fastening of the coupling plate to a frame of a tractor, the bearing block having a bearing region and a fastening region, the bearing region being designed for pivotable bearing of the coupling plate and the fastening region being designed for detachable fastening of the coupling plate to the frame of the tractor, and, sectioned in the direction of travel and parallel to the pivoting axis, the bearing region having a larger cross section than the fastening region.
It is advantageous that the semitrailer coupling can be constructed from as few individual parts as possible. This is achieved by virtue of the fact that the bearing blocks are formed from a one-piece casting.
It is also advantageous that transverse forces which act on the semitrailer coupling can be compensated in the bearing blocks. This is achieved by virtue of the fact that the bearing region of the bearing blocks is designed in such a way on the inner side of the vehicle that a clearance for movements of the coupling plate in a direction transverse to the direction of travel is present between the bearing region and the semitrailer coupling plate.
BRIEF DESCRIPTION OF THE DRAWINGS
An illustrative embodiment of the invention is described with reference to the Figures, in which:
FIG. 1 shows a three-dimensional view of a semitrailer coupling according to the invention;
FIG. 2 shows a view of the semitrailer coupling from FIG. 1 in the direction of travel, and
FIG. 3 shows a section through a bearing block perpendicular to the direction of travel.
 DETAILED DESCRIPTION
A semitrailer coupling 1 is illustrated in three-dimensional form in FIG. 1. The semitrailer coupling 1 is arranged on a tractor (not illustrated here) and serves for movable connection of the tractor to a trailer (likewise not illustrated here) of a semitrailer truck combination. When the trailer is coupled to the tractor, what is known as a king pin, which is arranged on the front lower side of the trailer, is located in a coupling claw 2 of the semitrailer coupling 1. Of the tractor, only a part region of a frame 3 is illustrated. The semitrailer coupling 1 comprises essentially a coupling plate 4 and two bearing blocks 5, only one bearing block 5 of which is illustrated here on the left side in the direction of travel x of the tractor.
The bearing block 5 has two regions with different functions: a bearing region 6 and a fastening region 7. Bearing elements, which serve for pivotable mounting of the coupling plate 4 about a pivoting axis y, are located in the bearing region 6. The pivoting axis y extends transversely to the direction of travel x of the tractor. Screws 8, with which the bearing block 5 is fastened to the frame 3 of the tractor, can be seen in the fastening region 7. The bearing block 5 is advantageously fastened to the vertical side surface 9 of the vehicle frame 3 by means of screws 8. Lateral screw fastening makes it possible for mounting and demounting to be carried out extremely easily on existing vehicle frames as well.
In FIG. 2, the semitrailer coupling 1 from FIG. 1 is again illustrated, seen in the direction of travel x of the tractor. It can be seen clearly here how the fastening region 7 of the bearing block 5 is fastened to the vertical side surface of the vehicle frame 3 with screws 8. No fastening or support is necessary on the horizontal surface of the vehicle frame 3, which is a surface with extremely poor access in the assembled state of the tractor. The second bearing block 5 on the right side of the coupling plate 4 has been omitted in FIG. 2 for greater clarity. The references in FIG. 2 refer to the same features as described in FIG. 1.
In FIG. 3, the bearing block 5 is illustrated on its own in a section perpendicular to the direction of travel x. A receiving region 10, which is provided on the underside of the coupling plate 4 for receiving the bearing block 5, is indicated diagrammatically with broken lines in the bearing region 6. The horizontal side surface 9 of the vehicle frame 3 for fastening the bearing block 5 is indicated with further broken lines in the fastening region 7. The bearing block 5 has a width b in the bearing region 6 which is at least 2.5 times the width of the bearing block 5 in the fastening region 7. The bearing block 5 is manufactured as a one-piece casting.
In the dimensioning of the casting, the shape is calculated in such a way that the necessary rigidity is achieved with minimum weight of the casting. On the inner side of the vehicle, the bearing region 6 is machined in such a way after casting that a clearance S remains free in the assembled state between the bearing region 6 of the bearing block 5 and the receiving region 10 of the semitrailer coupling plate 4. This clearance S left free on one side on the inner side of the vehicle serves for compensating movements of the coupling plate 4 in the direction of the pivoting axis y. Such a clearance S is likewise provided on the inner side of the vehicle in the case of the opposite bearing block (not shown here).
In the event of deformation in the direction of the pivoting axis y, these clearances S in each case receive the bearing regions 6 of the bearing blocks 5. In this way, transverse forces which in the operating state act on the semitrailer coupling 1 from the outer side of the vehicle to the inner side of the vehicle are compensated.
A cross-strut, previously mounted between the bearing blocks 5 to take up these transverse forces, is no longer required. Mounting and demounting the cross-strut in the region of difficult access below the coupling plate 4 is dispensed with. The bearing blocks 5 can be adapted to existing semitrailer couplings and existing vehicle frames. The present semitrailer coupling 1 with the newly dimensioned bearing blocks 5 makes possible, with the same load-carrying capacity, a reduction in weight and consequently a fuel saving for the semitrailer truck combination.

Claims (8)

1. A semitrailer coupling comprising a coupling plate and a bearing block for movable fastening of the coupling plate to a frame of a tractor, the bearing block includes a bearing region and a fastening region, the bearing region includes bearing means for pivotable bearing of the coupling plate about axis (y) and the fastening region includes fastening means for detachable fastening of the coupling plate to the frame of the tractor, wherein the bearing region has a larger cross section than that the fastening region, when the bearing block is viewed in section in the direction of travel (x) and parallel to pivoting axis (y), wherein between the bearing region of the bearing block and the receiving region of the coupling plate is a clearance wherein the clearance S between the bearing block and the coupling plate along the pivoting axis (y) is greater than the clearance elsewhere, wherein the clearance S compensates for movement of the coupling plate in the direction of the pivoting axis (y).
2. The semitrailer coupling as claimed in claim 1, wherein the bearing region of the bearing block defines with the coupling plate on a clearance for relative movements of the coupling plate and the bearing block in a direction perpendicular to the direction of travel (x) and in the direction of the pivoting axis (y).
3. The semitrailer coupling as claimed in claim 1, wherein the bearing block is formed from a one-piece casting.
4. The semitrailer coupling as claimed in claim 1, wherein the bearing block has a width (b) in the direction of the pivoting axis (y) in the bearing region which is smaller than the width of a receiving region on the coupling plate for receiving the bearing block.
5. The semitrailer coupling as claimed in claim 2, wherein the bearing block has a width (b) in the direction of the pivoting axis (y) in the bearing region which is smaller than the width of a receiving region on the coupling plate for receiving the bearing block.
6. The semitrailer coupling as claimed in claim 4, wherein the width (b) of the bearing region (6) is at least 2.5 times the width of the fastening region (7) of the bearing block (5).
7. The semitrailer coupling as claimed in claim 6, wherein the width (b) of the bearing region (6) is at least 2.5 times the width of the fastening region (7) of the bearing block (5).
8. Fifth wheel comprising a coupling plate and a bearing block for movably fastening the coupling plate to a frame of a tractor vehicle, the bearing block comprising a support zone and a fastening zone, the support zone being designed for swivelable support of the coupling plate and the fastening zone being designed for detachable fastening of the coupling plate to the frame of the tractor vehicle, the support zone having a larger cross-section than the fastening zone in the direction of travel (x) and in section parallel to the swivel axis (y), the bearing block having a width (b) in the support zone in the direction of the swivel axis (y) which is smaller than a width of a receiving zone and which is designed to accommodate the bearing block on the coupling plate in such a way that the support zone of the bearing block is arranged with play (S) in the receiving zone of the coupling plate, wherein the play (S) is designed to absorb the relative movement between the coupling plate and the bearing block in the direction of the swivel axis (y) in the area of the vehicle inboard side of the bearing block.
US10/538,541 2002-12-10 2003-10-31 Semitrailer coupling Expired - Fee Related US7487990B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10257807.9A DE10257807B4 (en) 2002-12-10 2002-12-10 fifth wheel
DE10257807.9 2002-12-10
PCT/EP2003/012171 WO2004052713A2 (en) 2002-12-10 2003-10-31 Semitrailer coupling

Publications (2)

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US20060170190A1 US20060170190A1 (en) 2006-08-03
US7487990B2 true US7487990B2 (en) 2009-02-10

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US10/538,541 Expired - Fee Related US7487990B2 (en) 2002-12-10 2003-10-31 Semitrailer coupling

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US (1) US7487990B2 (en)
EP (1) EP1578658B2 (en)
CN (1) CN100391777C (en)
AT (1) ATE350268T1 (en)
AU (1) AU2003276229A1 (en)
DE (2) DE10257807B4 (en)
DK (1) DK1578658T3 (en)
ES (1) ES2276163T5 (en)
PT (1) PT1578658E (en)
WO (1) WO2004052713A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD837103S1 (en) * 2016-09-19 2019-01-01 Iveco S.P.A. Towing attachment for vehicles
US10266022B2 (en) 2013-05-22 2019-04-23 Saf-Holland, Inc. Fifth wheel hitch assembly having direct-mount mounting brackets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1764290B1 (en) 2005-09-15 2010-06-30 SAF-HOLLAND Verkehrstechnik GmbH Fifth wheel coupling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0694467A2 (en) 1994-07-28 1996-01-31 ROCKINGER Spezialfabrik für Anhängerkupplungen GmbH & Co. Semi-trailer tractor
US5746438A (en) * 1995-03-03 1998-05-05 Jost--Werke AG Fifth wheel
US6182996B1 (en) * 1997-06-27 2001-02-06 Jost-Werke Gmbh & Co., Kg. Fifth wheel
WO2001034454A1 (en) 1999-11-12 2001-05-17 Scania Cv Aktiebolag (Publ) Connection arrangement comprising a fifth wheel
US6623024B1 (en) * 1998-03-27 2003-09-23 Jost-Werke Ag Fifth wheel coupling

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US2336939A (en) * 1940-09-06 1943-12-14 American Steel Foundries Fifth wheel mounting
DE1031141B (en) * 1956-04-09 1958-05-29 American Steel Foundries Semi-trailer coupling
CN86210718U (en) * 1986-12-20 1987-12-12 湖南省汽车车桥厂 Traction seat of modular graphite cast iron
US4762334A (en) * 1987-11-03 1988-08-09 Amsted Industries Incorporated Fifth wheel bracket mounting assembly
US5368324A (en) * 1994-01-10 1994-11-29 Amsted Industries Incorporated Mounting system for fifth wheels
US5464241A (en) * 1994-07-25 1995-11-07 Holland Hitch Company Plural height powered fifth wheel hitch
JP3465836B2 (en) * 1995-10-09 2003-11-10 株式会社 ソーシン Buffer support structure in coupler
US5765849A (en) * 1996-04-24 1998-06-16 Fontaine Fifth Wheel Co. Fifth wheel bracket
GB9821363D0 (en) * 1998-10-02 1998-11-25 Vbg Limited Fifth wheel coupler
DE19952997C5 (en) * 1999-11-04 2013-09-26 Jost-Werke Gmbh Fastening device for a fifth wheel to a vehicle frame
DE10213148C1 (en) * 2002-03-23 2003-07-03 Jost Werke Gmbh & Co Kg Saddle coupling between tractor vehicle and boom has bearing trunnion bolted to vehicle frame beam and with bearing surface

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0694467A2 (en) 1994-07-28 1996-01-31 ROCKINGER Spezialfabrik für Anhängerkupplungen GmbH & Co. Semi-trailer tractor
US5746438A (en) * 1995-03-03 1998-05-05 Jost--Werke AG Fifth wheel
US6182996B1 (en) * 1997-06-27 2001-02-06 Jost-Werke Gmbh & Co., Kg. Fifth wheel
US6623024B1 (en) * 1998-03-27 2003-09-23 Jost-Werke Ag Fifth wheel coupling
WO2001034454A1 (en) 1999-11-12 2001-05-17 Scania Cv Aktiebolag (Publ) Connection arrangement comprising a fifth wheel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10661621B2 (en) 2013-03-14 2020-05-26 Saf-Holland, Inc. Fifth wheel hitch assembly having direct-mount mounting brackets
US10266022B2 (en) 2013-05-22 2019-04-23 Saf-Holland, Inc. Fifth wheel hitch assembly having direct-mount mounting brackets
USD837103S1 (en) * 2016-09-19 2019-01-01 Iveco S.P.A. Towing attachment for vehicles

Also Published As

Publication number Publication date
EP1578658B1 (en) 2007-01-03
EP1578658A2 (en) 2005-09-28
DE10257807A1 (en) 2004-06-24
DE50306229D1 (en) 2007-02-15
PT1578658E (en) 2007-04-30
WO2004052713A2 (en) 2004-06-24
WO2004052713A3 (en) 2004-08-05
ATE350268T1 (en) 2007-01-15
ES2276163T5 (en) 2013-05-30
EP1578658B2 (en) 2013-02-27
ES2276163T3 (en) 2007-06-16
DK1578658T3 (en) 2007-05-07
CN100391777C (en) 2008-06-04
CN1723148A (en) 2006-01-18
DE10257807B4 (en) 2014-03-27
AU2003276229A1 (en) 2004-06-30
US20060170190A1 (en) 2006-08-03

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